Add the PPAPI X509 Certificate interface and implementation.

ppapi/ppapi_shared.gypi

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
    'variables': {
      'conditions': [
         ['inside_chromium_build==0', {
             'webkit_src_dir': '../../../..',
         },{
@@ skipping 117 matching lines @@
         'shared_impl/var_tracker.cc',
         'shared_impl/var_tracker.h',
         # TODO(viettrungluu): Split these out; it won't be used in NaCl.
         'shared_impl/private/net_address_private_impl.cc',
         'shared_impl/private/net_address_private_impl.h',
 
         'shared_impl/private/ppb_browser_font_trusted_shared.cc',
         'shared_impl/private/ppb_browser_font_trusted_shared.h',
         'shared_impl/private/ppb_char_set_shared.cc',
         'shared_impl/private/ppb_char_set_shared.h',
-
         'shared_impl/private/ppb_host_resolver_shared.cc',
         'shared_impl/private/ppb_host_resolver_shared.h',
         'shared_impl/private/ppb_tcp_server_socket_shared.cc',
         'shared_impl/private/ppb_tcp_server_socket_shared.h',
+        'shared_impl/private/ppb_x509_certificate_private_shared.cc',
+        'shared_impl/private/ppb_x509_certificate_private_shared.h',
         'shared_impl/private/tcp_socket_private_impl.cc',
         'shared_impl/private/tcp_socket_private_impl.h',
         'shared_impl/private/udp_socket_private_impl.cc',
         'shared_impl/private/udp_socket_private_impl.h',
 
         'thunk/enter.cc',
         'thunk/enter.h',
         'thunk/ppb_audio_api.h',
         'thunk/ppb_audio_config_api.h',
         'thunk/ppb_audio_config_thunk.cc',
@@ skipping 90 matching lines @@
         'thunk/ppb_video_decoder_api.h',
         'thunk/ppb_video_decoder_thunk.cc',
         'thunk/ppb_video_layer_api.h',
         'thunk/ppb_video_layer_thunk.cc',
         'thunk/ppb_view_api.h',
         'thunk/ppb_view_thunk.cc',
         'thunk/ppb_websocket_api.h',
         'thunk/ppb_websocket_thunk.cc',
         'thunk/ppb_widget_api.h',
         'thunk/ppb_widget_thunk.cc',
+        'thunk/ppb_x509_certificate_private_api.h',
+        'thunk/ppb_x509_certificate_private_thunk.cc',
         'thunk/ppb_zoom_thunk.cc',
         'thunk/thunk.h',
       ],
     },
   ],
 }